MSI G31TM-P21 - Motherboard - Micro ATX User manual
13.+3.3V
1.+3.3V
14.-12V
2.+3.3V
15.Ground
3.Ground
16.PS-ON#
4.+5V17.Ground
5.Ground
18.Ground
6.+5V
19.Ground
7.Ground
22.+5V
10.+12V
20.Res
8.PWR OK
23.+5V
11.+12V
21.+5V
9.5VSB
24.Ground
12.+3.3V
4.+12V
2.Ground
3.+12V
1.Ground
1.Ground
2.+12V
3.Sensor
1.Ground
2.+12V
3.Sensor
4.Control
1.VCC
2.SPDIF
3.Ground
4.R
3.Ground
2.Ground
1.L
1.+
3.-
10.No Pin
5.-Reset Switch
HDD LED
Power Switch
Power LED
7.+
9.Reserved
8.-
6.+
4.-
2.+
1.Ground
3.Suspend LED
5.Power LED
7.No Pin
8.+
6.-
4.+
2.-
Buzzer
Speaker
1.MICL
3.MICR
10.HeadPhoneDetection
5.HeadPhoneR
7.SENSE_SEND
9.HeadPhoneL
8.NoPin
6.MICDetection
4.PRESENCE#
2.Ground
10.NoPin
14.Ground
8.5VPower
12.Ground
6.SerialIRQ
4.3.3VPower
2.3VStandbypower1.LPCClock
3.LPCReset
5.LPCaddress&datapin0
7.LPCaddress&datapin1
9.LPCaddress&datapin2
11.LPCaddress&datapin3
13.LPCFrame
1.CINTRU
2.Ground
10.Ground
14.Ground
8.LPT_SLIN#
12.Ground
6.PINIT#
4.ERR#
2.AFD#
24.Ground
22.Ground
26.NoPin
20.Ground
18.Ground
16.Ground
1.RSTB#
3.PRND0
5.PRND1
7.PRND2
9.PRND3
11.PRND4
13.PRND5
15.PRND6
17.PRND7
19.ACK#
21.BUSY
23.PE
25.SLCT
1
1
1
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